KR20070026352A - Arrangement and system for a dental replacement component - Google Patents

Abstract

A dental replacement component I s to be able to be produced with a color which better matches the area surrounding the component. The component has a reinforcing element (4, 17) which comprises carbon fiber wires arranged in one or more carbon fiber hoses. These carbon fiber wires can be held together by means of hardenable substance so as to form a homogeneous part of the reinforcing element. At least that portion or those portions of the reinforcing element directed toward the surrounding area supports/support or is/are provided with additional fiber material with a color which better matches said color than does the carbon fiber. The invention also relates to a system for producing such a replacement component. Besides the more advantageous coloring of the reinforcing element, the latter is able to retain its physical properties in respect of its strength. ® KIPO & WIPO 2007

Description

Arrangements and Systems for Tooth Replacement Components {ARRANGEMENT AND SYSTEM FOR A DENTAL REPLACEMENT COMPONENT}

The invention relates in particular to the arrangement of dental replacement components, which may constitute all or part of a dental bridge, tooth preparation, etc. The color corresponding to the surrounding area (dental, gum, tooth) in the oral cavity can be given. Alternative components may include reinforcing elements comprising carbon fiber wires disposed in one or more carbon fiber hoses and comprising carbon fiber wires that may be held together by a hardenable material to form a homogeneous part of the reinforcing element. Have

The invention also relates to a system for manufacturing alternative components of this kind.

The use of reinforcing elements comprising carbon fiber materials is already known, in this regard see Swedish patent SE 457 691 and Swedish patent applications 0004883-5, 0203497-3 and 0203897-4.

When manufacturing an alternative component in the form of a question, it is important to be able to provide a color that is compatible with the patient's remaining teeth, jawbone, gums and the like. The use of carbon fiber as a reinforcing element yields excellent results in terms of strength. At the same time, however, the dark color of the carbon fiber, which looks very good and is hard to hide the color of the opaque covering in pink or white form, is a problem.

Thus, it is highly desirable to be able to produce reinforcing elements from fibers of different colors. The problem is that there are no commercially available replacement fibers with the strength and other physical properties of carbon fibers.

The present invention aims to solve this problem and proposes a reinforcing element which still comprises a core or inner part made of carbon fiber, and a fiber batch which is external to and more suitable than carbon fiber in terms of its color.

 In general, a characteristic that may be considered to characterize a batch according to the invention is that the color of the carbon fiber, at least in part or portions thereof, directed to the surrounding area, is better matched to the coloring than the carbohydrate fiber. An additional fibrous material is provided which supports an additional fibrous material having a color, or at least in part or parts thereof, directed to a portion of the carbon fiber, which has a color that is better matched to the coloring than carbohydrate fibers. Will be.

The additional fiber material may have a tube shape and may enclose all or part / part of the carbon fiber. In addition to covering the dark color of the carbon fibers, the additional fiber material can also increase the stiffness and / or strength of the homogeneous carbon fiber portion, if desired. The additional fiber material may be composed of aluminum oxide or para-aramid. In a preferred embodiment, the layer or thickness of additional fiber material will be 2-5% of the thickness or diameter of the reinforcing element. Further embodiments of the novel batch are described in the accompanying dependent claims relating to the batch.

A characteristic that can be generally considered to characterize a system according to the invention is the display on the screen of an alternative component, in order to ascertain the treatment status of the patient, and as a function of information and through interaction with the user. And a reinforcing element contained within the component, the reinforcing element having fibers made of a material such as aluminum oxide or para-aramid, which completely or partially covers the core or interior of the carbon fiber and the core or interior In order to convey information to a computer device to allow display on the screen of the screen (which has a color that better matches the coloring), identification equipment is designed and empirical on the core and the fibers covering the core. Based on the data, for example diameter, thickness, quality, color, diameter With the help of such relationship between the thickness, is that considerable manual placement of the electronic device and / or a substantially involving the moving picture input unit (PROCERA®) to participate in the production of the reinforcing element.

By the above proposal, one can obtain what can be regarded as a hybrid. Carbon fiber is used as a reinforcement for producing tooth bridges on implants or manufactured teeth. The dark color of the carbon fibers does not change easily, which is a major disadvantage in the manufacture of tooth bridges in general. The fibers should therefore be colored in a covering color (pink or white) depending on whether it is the purpose to hide them against the gums or teeth. Thus, a desire was expressed for the possibility of using white fibers. Aluminum oxide fibers are white in color and are therefore widely accepted in these applications. By the proposed, many carbon fiber hoses can fit inside a hose made of aluminum oxide, resulting in a hybrid that solves the problem of dark color of carbon fiber. The core of the carbon fiber can provide excellent physical properties, and the aluminum oxide fiber covers the dark color of the carbon fiber and, if desired, increases the stiffness of the structure. Another fiber that can be used correspondingly is para-aramid fiber sold under the tradename KEVLAR® or TWARON®. This fiber is more yellow in color, which is preferable to the dark color of the carbon fiber. The para-aramid fibers can be used if moisture up to about 3% is allowed. If a low moisture absorption level is desired, for example 0.1%, aluminum oxide fibers can be used.

The presently presented embodiments of the arrangements and systems according to the invention are described below with reference to the accompanying drawings.

FIG. 1 shows a front view of an alternative component in the form of a tooth bridge fitted to the upper jaw and provided with a reinforcing element, showing its tooth set in relation to the teeth of the lower jaw.

2 shows a plan view of the range of the reinforcing elements in the alternative component according to FIG. 1.

3 shows a cross section of a reinforcing element consisting of an inner core of carbon fiber and a tube surrounding the core and made of a second fiber material.

4 shows in longitudinal section the reinforcing element according to FIG. 3.

5 shows an inner layer of carbon fiber material, and a cross section of a portion made of a second fiber material partially covering the inner layer.

6 shows a front view of a reinforcement component that includes a tooth preparation with reinforcement elements.

7 is a flowchart showing various steps in the manufacture of the replacement component.

In Fig. 1, the patient is indicated by reference (1). The upper jaw 2 of the patient is provided with an alternative component in the form of a tooth bridge 3. The alternative component can be designed in a manner known per se as the set of internal reinforcing elements 4 and teeth 5. In FIG. 1, the lower jaw of the patient is also indicated by reference sign 6 and the patient still has teeth 7 on the lower jaw.

2 shows the range of the reinforcing element 4 of the upper jaw 2. The teeth are similarly represented by the sign (5).

FIG. 3 shows that the reinforcing element 4 comprises a carbon fiber core 8 and a tube 9 made of a second fiber material which surrounds the core and can be aluminum oxide or para-aramid. The diameter of the reinforcing element is represented by (D), and the diameter of the core is represented by (D1). The additional fibrous layer 9 has a thickness t substantially thinner than the diameter D1. The thickness t may be 1-5% of the diameter D1, for example.

The carbon fibers may be made of carbon fiber wires inlaid in the carbon fiber hoses in a manner known per se. Thus, the additional fibers 9 form a hose for the carbon fiber wire or the carbon fiber hoses surrounding them. The peripheral hose 9 was provided with a curing agent having the effect that the carbon fiber wire and the carbon fiber hose were firmly held together in connection with the polymerization. The formation of a homogeneous carbon fiber core can be carried out according to the references mentioned in the introduction, and therefore not described in more detail herein. Instead of the tubes described, which are removed after polymerization, additional fiber materials are thus used, which thus remain on the finished reinforcing element.

FIG. 5 shows an exemplary embodiment where the core 8 ′ is only partially applied by an additional fiber material 9 ′. In connection with this embodiment, it is possible for a part of the reinforcing element covered with the fiber material 9 'to face the outside of the alternative component.

6 shows a tooth preparation which can use the reinforcing element according to the invention. In this case, the tooth preparation comprises only one tooth and is indicated by reference numeral 10. The upper jaw of the patient is indicated by the sign (2 ') and the reinforcing element (4'), while the tooth in question is indicated by the sign (5 ').

In Figure 7, the patient is represented by (11). The patient will receive a tooth bridge in the upper jaw, and still have teeth 12 in the lower jaw. The confirmation device is shown by (13), and with the help of this confirmation device, the treatment state of the patient can be confirmed. Such verification may be performed in a manner known per se, using other devices, instruments and aids. Information 14 regarding the result of the confirmation can be conveyed to the computer device 15 provided with the screen 15a and the operating member (eg keyboard) 15b. The computer device is, in a manner known per se, for providing a visual image of the treatment state as a function of the received information 14 and for modifying this image via the actuating member 15b. In this way, a visual image 16 of the alternate component / tooth bridge can be obtained. The fitting of the reinforcing element is indicated by reference numeral 17 in FIG. 7. As a function of the visual structure on the computer 15, the relevant information 18, 19 may be a manual operating device 20 (or a dental technician) and / or a fully automated manufacturing device for a tooth product, for example PROCERA®. Form to the manufacturing apparatus. Once information from the computer device is received in the device 20, the reinforcing elements 17 ', 17 "can be manufactured and the tooth bridge or replacement component 16' can be finished. And the manufacture of the tooth bridge can be carried out in the fully automated device 21. Alternatively, cooperation between the units 20, 21 is also possible, as encoded by arrows 22 pointing in two directions. 21 may also be two-way associated with a computer device (see 19) and a verification device (see 23) .Manufacturing in the manually operated device 20 and / or the fully automated device 21 In this regard, alternative components can be manufactured based on experimental data, in which it can be said that information can be obtained about the core and the fibers to which it is applied. Three of the relationship between color, diameter and thickness for the state of problem The color chosen for the additional fibrous material may be white (or substantially white), or may have a yellowish tint, as well as information on the water absorption present in the particular treatment case. In Fig. 7, the user of the computer device is indicated by reference numeral 24.

The invention is not limited to the above exemplary embodiment, but instead can be modified within the scope of the appended claims and the concept of the invention.

Computer devices and verification devices, which can be of known type, operate through conventional computer programs and file management.

Claims (11)

In a batch of tooth replacement components, for example in the form of all or a portion of a tooth bridge, tooth preparation 3, etc., which may be given a color matching the area around the replacement component (in the patient's mouth), The alternative component has a reinforcing element 4 disposed in one or more carbon fiber hoses and comprising a carbon fiber wire that can be supported together by a curable material to form a homogeneous part of the reinforcing element, The carbon fiber portion supports an additional fibrous material having a color that is at least in part or portions thereof directed to the peripheral region, the color being more coordinated to the coloring than carbohydrate fibers 8, or to the carbon fiber portion, A batch, characterized in that at least in part or parts thereof directed to the peripheral area, an additional fiber material is provided having a color that is more in harmony with the coloring than carbohydrate fibers (8). The method of claim 1, Wherein the additional fiber material has a tube shape and surrounds all or part / part of the carbon fiber. The method according to claim 1 or 2, The additional fiber material (9) is characterized in that it is designed not only to cover the dark color of the carbon fiber but also to increase the stiffness and / or strength of some of the homogeneous carbon fiber. The method according to any one of claims 1 to 3, Wherein the additional fiber material comprises or consists of aluminum oxide fibers. The method of claim 4, wherein And the additional fibrous material is substantially white. The method according to any one of claims 1 to 3, Wherein said additional fibrous material comprises or consists of para-aramid fibers. The method of claim 6, And the additional fibrous material is substantially yellow. The method according to any one of claims 1 to 5, And wherein said additional fibrous material is provided with water absorption corresponding to or only slightly above the water absorption of said carbon fibers. The method according to any one of claims 1 to 8, And the layer or wall thickness of the additional fibrous material is 1-5% of the thickness or diameter of the reinforcing element. The method according to any one of claims 1 to 9, Wherein the carbon fiber hose with carbon fiber wire is located in a hose made of the additional fiber material. In the manufacturing system of the tooth replacement component, for example in the form of a tooth bridge 3, a tooth preparation 10, etc., which can be given a matching color with the area around the component, The replacement component has a reinforcing element 4 disposed in one or more carbon fiber hoses and comprising a carbon fiber wire that can be supported together by a curable material to form a homogeneous portion of the reinforcing element, The identification device 13 includes a display on the screen of the alternative component and a core of carbon fiber contained within the component to confirm the treatment status of the patient, and as a function of information and through interaction with the user 24. 8) or fibers of color (9, 9), which completely or partially cover the core or interior and are made of a material such as, for example, aluminum oxide or para-aramid, and which are more compatible with the coloring than the carbon fibers. Designed to convey information to the computer device 15 for allowing display on the screen of the reinforcing element with On the basis of experimental data on the core or the fibers covering it, the device and / or the substantially fully automated device (PROCERA®) with significant manual input are for example diameter (D, D1), thickness (t ), Quality, color, relationship between the carbon fiber and the additional fiber, etc., arranged to participate in the manufacture of the reinforcing element.

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